| population | |
| Mercer Borough Police Department | |
| Mercer County Sheriffs Agency | |
| Mercer East End Volunteer Fire Department |
| population | |
| Mercer Post Office |
 | Venango Regional Airport | ~ 35.60 km |
| Youngstown Warren Regional Airport | ~ 37.25 km |
| Port Meadville Airport | ~ 44.51 km |
| Beaver County Airport | ~ 52.14 km |
| Pittsburgh/Butler Regional Airport | ~ 55.46 km |
| Northeast Ohio Regional Airport | ~ 72.29 km |
| Pittsburgh International Airport | ~ 81.73 km |
| Erie International Tom Ridge Field | ~ 95.39 km |
| Allegheny County Airport | ~ 100.33 km |
